Inserting pictures on PitRacer is a little challenging and the process seemed to change a little while back - Either that or I am doing it incorrectly/a difficult way.
The following sequence is how I insert Photos that I have stored on my PC. I suspect photos stored in the cloud are easier.
1) Create a PitRacer Gallery under your account.
2) Upload the photo you want to include in a post or message to you gallery.
3) Click on the photo to expand and there will be a share option.
4) Under the Share option copy the direct link URL - it is the second URL.
5) In you desired post or message, click on the little photo rectangle next to the emoticon icon and paste your copied gallery photo URL into the text box.
6) This will insert the photo.
This is how I have been inserting pictures into the posts and messages. If there is a more straightforward way, I welcome anyone's input.